| 赣江南昌河段水位降低现状及影响因素 |
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| 引用本文： | 唐立模,叶志恒,杨家启,肖洋.赣江南昌河段水位降低现状及影响因素[J].水利水电科技进展,2018,38(6):13-18. |
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| 作者姓名： | 唐立模 叶志恒 杨家启 肖洋 |
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| 作者单位： | 河海大学水文水资源及水利工程科学国家重点实验室, 江苏 南京 210098; 河海大学水利水电学院, 江苏 南京 210098,河海大学水利水电学院, 江苏 南京 210098,河海大学水利水电学院, 江苏 南京 210098,河海大学水文水资源及水利工程科学国家重点实验室, 江苏 南京 210098; 河海大学水利水电学院, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金(51479070) |
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| 摘 要： | 采用资料分析以及数模验证的方法,从赣江南昌河段水位降低与上游来水来沙、下游鄱阳湖水位降低以及南昌河段河床下切三个方面,对赣江南昌河段水位下降的影响因素进行了分析。结果表明:河床下切是赣江南昌河段水位降低的一个主要影响因素,大规模人为采砂是南昌河段河床下切的主因;下游鄱阳湖水位的降落亦会导致赣江南昌河段的水位下降,降幅随鄱阳湖水位降低的幅度、距鄱阳湖的距离以及流量的不同而不同,并且在枯水时受局部高滩河床的影响尤其明显;水流自然冲刷对河床下切造成的影响仅占1. 0%~3. 5%,对赣江南昌河段水位下降的影响有限。
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| 关 键 词： | 赣江南昌河段 水位下降 河床下切 采砂 鄱阳湖 |
| 收稿时间： | 2017/8/22 0:00:00 |
Status analysis and influence factors of water level dropping in Nanchang reach of Ganjiang River |
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| TANG Limo,YE Zhiheng,YANG Jiaqi and XIAO Yang.Status analysis and influence factors of water level dropping in Nanchang reach of Ganjiang River[J].Advances in Science and Technology of Water Resources,2018,38(6):13-18. |
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| Authors: | TANG Limo YE Zhiheng YANG Jiaqi and XIAO Yang |
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| Affiliation: | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China,College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China,College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China and State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | From data analysis and numerical validation, the influence factors of water level dropping in Nanchang reach of Ganjiang River were analyzed in the aspect of the water and sediment discharge from the upstream, water level dropping of the Poyang Lake in the downstream and the riverbed deepening in Nanchang reach. It shows that riverbed deepening caused by the large scale of artificial sand mining is the main influence factor for the water level dropping in Nanchang reach. Water level dropping of the Poyang Lake is another factor and the dropping amplitude varied from the amplitude of the water level in the downstream, the distance from the Poyang Lake and the river discharge. In addition, the water level drop in the downstream is also evidently affected by local high beach bed in the dry season. Self-scouring only accounts for 1. 0%~3. 5% of the riverbed deepening, which has limited impact on the water level dropping in Nanchang reach. |
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| Keywords: | Nanchang reach of Ganjiang River water level drop riverbed deepening sand mining Poyang Lake |
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